CFD Modeling and Simulation of Superheated Steam Fluidized Bed Drying Process

Xiao, Zhenggang; Zhang, Fan; Wu, Nanxing; Liu, Xiangdong

doi:10.1007/978-3-642-36124-1_18

Cited by 5 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This method was also used in simulating the drying of pistachios, tea leaves, soybean and many other foods [42][43][44][45][46]. In addition, Xiao et al (2012) developed a CFD model and performed a simulation of superheated steam fluidized bed drying process [47]. In addition, CFD has also found application in simulating the drying of by-products from distillation operations [48].…”

Section: Dehydrationmentioning

confidence: 99%

Application of computational fluid dynamics simulations in food industry

Szpicer

Bińkowska

Wojtasik‐Kalinowska

et al. 2023

Eur Food Res Technol

View full text Add to dashboard Cite

Computational fluid dynamics (CFD) is a tool for modelling and simulating processes in many industries. It is usually used as a choice to solve problem involving flow of fluids, heat transfer, mass transfer and chemical reaction. Moreover, it has also found application in the optimization of processes in branches of the food industry, including bread baking, cooling beef roast, or spray drying. CFD has enormous potential and many opportunities to improve the quality and safety of food products, as well as to reduce the costs of production and the use of machines and production equipment. In addition, empirical models only permit data to be extracted at a limited number of locations in the system (where sensors and gauges are placed). CFD allows the designer to examine any location in the region of interest, and interpret its performance through a set of thermal and flow parameters. Computer simulations are the future of every field of science, and the presented overview provides the latest information on experts and experiences related to CFD application in food production. Despite some disadvantages, such as the need to have a large reserve of computing power, the development of digital and IT technologies will make this problem insignificant in the nearest future. Then the CFD will become an indispensable element in the design of equipment and technological lines in the food industry.

show abstract

Section: Dehydrationmentioning

confidence: 99%

Application of computational fluid dynamics simulations in food industry

Szpicer

Bińkowska

Wojtasik‐Kalinowska

et al. 2023

Eur Food Res Technol

View full text Add to dashboard Cite

show abstract

“…A very acceptable agreement between the simulated and measured results was achieved. Additionally, Xiao et al (2012) performed CFD modeling, simulation, and experiments on the drying characteristics of rapeseed using a superheated steam FB dryer. The simulated drying curve obtained from the drying model was in good agreement with the experimental results.…”

Section: Fluidized Bed Modelingmentioning

confidence: 99%

Challenges and Opportunities Associated with Drying Rough Rice in Fluidized Bed Dryers: A Review

Luthra¹,

Sadaka²

2020

Transactions of the ASABE

View full text Add to dashboard Cite

Highlights Fluidized bed drying of rice has several advantages that outweigh its disadvantages. Increasing the drying temperature above 60°C could reduce rice quality. Research related to energy and exergy efficiencies in fluidized bed dryers of rice is needed. Abstract. Rice (Oryza sativa L.) is a staple food for more than half the world’s population. World rice production reached approximately 740 million metric tons (MMT) in 2018 due to the ever-increasing demand driven by population and economic growth. Rice producers face challenges in meeting this demand, especially in developing countries where rice is prone to spoilage if the moisture content is not reduced to a safe level shortly after harvest. Rice producers, particularly in developing countries, typically use conventional drying methods, i.e., sun drying and natural air drying. These methods are time-consuming and environmentally dependent. On the other hand, fluidized bed drying, which is a well established technology, could provide rice producers with an effective drying technique that is quick, practical, affordable, and portable. Several innovative designs for fluidized bed dryers have been developed that could be installed on-farm or off-farm at a reasonable cost. Some studies have mentioned that the main advantage of fluidized bed drying is the increase in drying rate and the reduction of rice spoilage after harvest. Conversely, other studies have raised alarms regarding low rice quality, which is seen as a significant flaw of fluidized bed drying. Due to this lack of consensus, there is a great need to review this drying technology objectively. Therefore, this review article explores fluidized bed drying and details its advantages and disadvantages related to rice drying. It also sheds light on the effects of the operating parameters involved in fluidized bed drying, i.e., rice moisture content, drying temperature, airflow rate, air velocity, drying duration, and tempering duration, on dryer performance and rice quality. Several fluidized bed numerical models are also reviewed and evaluated. Additionally, this review explores the energy and exergy efficiencies of fluidized bed dryers and suggests opportunities for research associated with fluidized bed drying of rice. Keywords: Energy, Exergy, Fluidized bed drying, Fluidized bed modeling, Moisture content, Rice quality, Rough rice, Tempering.

show abstract

“…They have used the thickness of carrot chips as 2.35–2.65 mm, radius of chips with 9.85–10.15 mm and operated air temperature of 313, 323, and 333 K with velocity of 2.5 and 15.5 m/s (Hu et al, ). Xiao, Zhang, Wu, and Liu () have performed CFD modeling, simulation and drying of rapeseeds using fluidized bed dryer with superheated steam. They have given operating parameters as inlet steam temperature of 423 K with pressure 1.01 × 10 5 Pa and from the reports it has been observed that three periods namely condensation, constant and falling rate periods in drying curves exist for both experimental and simulation (Xiao et al, ) work.…”

Section: Introductionmentioning

confidence: 99%

“…Xiao, Zhang, Wu, and Liu () have performed CFD modeling, simulation and drying of rapeseeds using fluidized bed dryer with superheated steam. They have given operating parameters as inlet steam temperature of 423 K with pressure 1.01 × 10 5 Pa and from the reports it has been observed that three periods namely condensation, constant and falling rate periods in drying curves exist for both experimental and simulation (Xiao et al, ) work. Jafari and Zare () have studied on ultrasonic fluidized bed dryer and examined energy consumption and drying behavior of paddy rice.…”

Section: Introductionmentioning

confidence: 99%

Energetic and exergetic analyses of Barnyard millet drying using continuous multistage fluidized bed dryer

Devani

Yelamarthi

2019

J Food Process Engineering

View full text Add to dashboard Cite

Most of the exergy studies reported were in batch fluidized bed drying process. The continuous dryer plays a pivotal role in industrial usage. In this study, exergy and energy analyses of multistage fluidized bed drying of Barnyard millet with stages connected externally were examined. The dryer was operated by changing wall temperature of stages (313–328 K), air inlet velocity (1.01–1.3 m/s), downcomer height (50–70 mm), and flow rate of solids (5–10 kg/h). Drying characteristics of Barnyard millet by changing process operating conditions of the dryer, were reported and the energy utilization ratio, exergy loss and exergy efficiency of dryer were also reported. The EUR of dryer at steady state has been found to be in the range of 0.25–0.46 and the maximum exergy efficiency of dryer was observed as 0.64 and lowest as 0.371 in the continuous drying process. Practical Applications Fluidized beds offer many distinct features and advantages for processing of particulate food materials. To decrease the drying time than that for single stage dryers, continuous multistage fluidized bed dryer was introduced. Reducing moisture content from feed materials in continuous dryers while discharging continuously, helps to process large quantity of solid materials with good quality of product. Several dryers with different modifications and designs have been suggested by many earlier investigators but continuous dryers play significant role in particulate industry. The multistage dryer is designed by connecting two or more fluidized beds internally or externally, where each bed is termed as a stage. Advantages of the multistage dryer are improvement in gas–solid axial mixing, which results in good quality of product. Due to stage‐wise contact of solids with gas, dried product with uniform moisture content can be obtained.

show abstract

CFD Modeling and Simulation of Superheated Steam Fluidized Bed Drying Process

Cited by 5 publications

References 11 publications

Application of computational fluid dynamics simulations in food industry

Application of computational fluid dynamics simulations in food industry

Challenges and Opportunities Associated with Drying Rough Rice in Fluidized Bed Dryers: A Review

Energetic and exergetic analyses of Barnyard millet drying using continuous multistage fluidized bed dryer

Contact Info

Product

Resources

About